Altigen ACM 6.7, Administrator'S Manual

Page: 366 / 470

Cases When Switchover Occurs
352 MAXCS ACM 6.7 Administration Manual
Figure 148. Redundancy topology
To realize the shared IP addresses, each Softswitch server needs two network
integration cards (NIC cards) set up, one for sharing and another for redundancy control
and system maintenance. A single redundancy IP address should be assigned to the
redundancy NIC card. All redundancy NIC cards and KAB control NIC cards are
connected by network Switch 2.
A single IP address should be assigned to the sharing NIC card. All external services,
including gateways, VM service, Logger Service, recording service and IP phones, and
CT applications should try to contact the shared IP address through network Switch 1.
This network is bridged by the KAB to either the primary or secondary server.
Switch 1 and Switch 2 are linked to one another directly.
Cases When Switchover Occurs
In the following cases, MAXCS will switch control of the system from the active
Softswitch to the standby Softswitch:
•
The button Manual Switch Over is clicked in the Redundancy Administration dialog
box (see “Manually Switching Over” on page 362).
• The active system crashes or is shut down or restarted, and Automatically assume
control when active system is not available is selected in the Redundancy dialog
box of the standby system (see Figure 149 on page 355).